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	<title>API: event-gestures   Flick.js  (YUI Library)</title>

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        <h3>event-gestures&nbsp; <span class="subtitle">3.3.0</span></h3>
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                        <div class="highlight"><pre><span class="cm">/**</span>
<span class="cm"> * The gestures module provides gesture events such as &quot;flick&quot;, which normalize user interactions</span>
<span class="cm"> * across touch and mouse or pointer based input devices. This layer can be used by application developers</span>
<span class="cm"> * to build input device agnostic components which behave the same in response to either touch or mouse based  </span>
<span class="cm"> * interaction.</span>
<span class="cm"> *</span>
<span class="cm"> * &lt;p&gt;Documentation for events added by this module can be found in the event document for the &lt;a href=&quot;YUI.html#events&quot;&gt;YUI&lt;/a&gt; global.&lt;/p&gt;</span>
<span class="cm"> *</span>
<span class="cm"> * @module event-gestures</span>
<span class="cm"> */</span>

<span class="cm">/**</span>
<span class="cm"> * Adds support for a &quot;flick&quot; event, which is fired at the end of a touch or mouse based flick gesture, and provides </span>
<span class="cm"> * velocity of the flick, along with distance and time information.</span>
<span class="cm"> *</span>
<span class="cm"> * @module event-gestures</span>
<span class="cm"> * @submodule event-flick</span>
<span class="cm"> */</span>

<span class="kd">var</span> <span class="nx">EVENT</span> <span class="o">=</span> <span class="p">(</span><span class="s2">&quot;ontouchstart&quot;</span> <span class="k">in</span> <span class="nx">Y</span><span class="p">.</span><span class="nx">config</span><span class="p">.</span><span class="nx">win</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">Y</span><span class="p">.</span><span class="nx">UA</span><span class="p">.</span><span class="nx">chrome</span><span class="p">)</span> <span class="o">?</span> <span class="p">{</span>
        <span class="nx">start</span><span class="o">:</span> <span class="s2">&quot;touchstart&quot;</span><span class="p">,</span>
        <span class="nx">end</span><span class="o">:</span> <span class="s2">&quot;touchend&quot;</span>
    <span class="p">}</span> <span class="o">:</span> <span class="p">{</span>
        <span class="nx">start</span><span class="o">:</span> <span class="s2">&quot;mousedown&quot;</span><span class="p">,</span>
        <span class="nx">end</span><span class="o">:</span> <span class="s2">&quot;mouseup&quot;</span>
    <span class="p">},</span>

    <span class="nx">START</span> <span class="o">=</span> <span class="s2">&quot;start&quot;</span><span class="p">,</span>
    <span class="nx">END</span> <span class="o">=</span> <span class="s2">&quot;end&quot;</span><span class="p">,</span>

    <span class="nx">OWNER_DOCUMENT</span> <span class="o">=</span> <span class="s2">&quot;ownerDocument&quot;</span><span class="p">,</span>
    <span class="nx">MIN_VELOCITY</span> <span class="o">=</span> <span class="s2">&quot;minVelocity&quot;</span><span class="p">,</span>
    <span class="nx">MIN_DISTANCE</span> <span class="o">=</span> <span class="s2">&quot;minDistance&quot;</span><span class="p">,</span>
    <span class="nx">PREVENT_DEFAULT</span> <span class="o">=</span> <span class="s2">&quot;preventDefault&quot;</span><span class="p">,</span>

    <span class="nx">_FLICK_START</span> <span class="o">=</span> <span class="s2">&quot;_fs&quot;</span><span class="p">,</span>
    <span class="nx">_FLICK_START_HANDLE</span> <span class="o">=</span> <span class="s2">&quot;_fsh&quot;</span><span class="p">,</span>
    <span class="nx">_FLICK_END_HANDLE</span> <span class="o">=</span> <span class="s2">&quot;_feh&quot;</span><span class="p">,</span>

    <span class="nx">NODE_TYPE</span> <span class="o">=</span> <span class="s2">&quot;nodeType&quot;</span><span class="p">;</span>

<span class="cm">/**</span>
<span class="cm"> * Sets up a &quot;flick&quot; event, that is fired whenever the user initiates a flick gesture on the node</span>
<span class="cm"> * where the listener is attached. The subscriber can specify a minimum distance or velocity for</span>
<span class="cm"> * which the event is to be fired. The subscriber can also specify if there is a particular axis which</span>
<span class="cm"> * they are interested in - &quot;x&quot; or &quot;y&quot;. If no axis is specified, the axis along which there was most distance</span>
<span class="cm"> * covered is used.</span>
<span class="cm"> *</span>
<span class="cm"> * &lt;p&gt;It is recommended that you use Y.bind to set up context and additional arguments for your event handler,</span>
<span class="cm"> * however if you want to pass the context and arguments as additional signature arguments to &quot;on&quot;, </span>
<span class="cm"> * you need to provide a null value for the configuration object, e.g: &lt;code&gt;node.on(&quot;flick&quot;, fn, null, context, arg1, arg2, arg3)&lt;/code&gt;&lt;/p&gt;</span>
<span class="cm"> *</span>
<span class="cm"> * @event flick</span>
<span class="cm"> * @for YUI</span>
<span class="cm"> * @param type {string} &quot;flick&quot;</span>
<span class="cm"> * @param fn {function} The method the event invokes. It receives an event facade with an e.flick object containing the flick related properties: e.flick.time, e.flick.distance, e.flick.velocity and e.flick.axis, e.flick.start.</span>
<span class="cm"> * @param cfg {Object} Optional. An object which specifies any of the following:</span>
<span class="cm"> * &lt;dl&gt;</span>
<span class="cm"> * &lt;dt&gt;minDistance (in pixels, defaults to 10)&lt;/dt&gt;</span>
<span class="cm"> * &lt;dd&gt;The minimum distance between start and end points, which would qualify the gesture as a flick.&lt;/dd&gt;</span>
<span class="cm"> * &lt;dt&gt;minVelocity (in pixels/ms, defaults to 0)&lt;/dt&gt;</span>
<span class="cm"> * &lt;dd&gt;The minimum velocity which would qualify the gesture as a flick.&lt;/dd&gt;</span>
<span class="cm"> * &lt;dt&gt;preventDefault (defaults to false)&lt;/dt&gt;</span>
<span class="cm"> * &lt;dd&gt;Can be set to true/false to prevent default behavior as soon as the touchstart/touchend or mousedown/mouseup is received so that things like scrolling or text selection can be </span>
<span class="cm"> * prevented. This property can also be set to a function, which returns true or false, based on the event facade passed to it.&lt;/dd&gt;</span>
<span class="cm"> * &lt;dt&gt;axis (no default)&lt;/dt&gt;</span>
<span class="cm"> * &lt;dd&gt;Can be set to &quot;x&quot; or &quot;y&quot; if you want to constrain the flick velocity and distance to a single axis. If not</span>
<span class="cm"> * defined, the axis along which the maximum distance was covered is used.&lt;/dd&gt;</span>
<span class="cm"> * &lt;/dl&gt;</span>
<span class="cm"> * @return {EventHandle} the detach handle</span>
<span class="cm"> */</span>

<span class="nx">Y</span><span class="p">.</span><span class="nx">Event</span><span class="p">.</span><span class="nx">define</span><span class="p">(</span><span class="s1">&#39;flick&#39;</span><span class="p">,</span> <span class="p">{</span>

    <span class="nx">on</span><span class="o">:</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">node</span><span class="p">,</span> <span class="nx">subscriber</span><span class="p">,</span> <span class="nx">ce</span><span class="p">)</span> <span class="p">{</span>

        <span class="kd">var</span> <span class="nx">startHandle</span> <span class="o">=</span> <span class="nx">node</span><span class="p">.</span><span class="nx">on</span><span class="p">(</span><span class="nx">EVENT</span><span class="p">[</span><span class="nx">START</span><span class="p">],</span>
            <span class="k">this</span><span class="p">.</span><span class="nx">_onStart</span><span class="p">,</span>
            <span class="k">this</span><span class="p">,</span>
            <span class="nx">node</span><span class="p">,</span>
            <span class="nx">subscriber</span><span class="p">,</span> 
            <span class="nx">ce</span><span class="p">);</span>
 
        <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_START_HANDLE</span><span class="p">]</span> <span class="o">=</span> <span class="nx">startHandle</span><span class="p">;</span>
    <span class="p">},</span>

    <span class="nx">detach</span><span class="o">:</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">node</span><span class="p">,</span> <span class="nx">subscriber</span><span class="p">,</span> <span class="nx">ce</span><span class="p">)</span> <span class="p">{</span>

        <span class="kd">var</span> <span class="nx">startHandle</span> <span class="o">=</span> <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_START_HANDLE</span><span class="p">],</span>
            <span class="nx">endHandle</span> <span class="o">=</span> <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_END_HANDLE</span><span class="p">];</span>

        <span class="k">if</span> <span class="p">(</span><span class="nx">startHandle</span><span class="p">)</span> <span class="p">{</span>
            <span class="nx">startHandle</span><span class="p">.</span><span class="nx">detach</span><span class="p">();</span>
            <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_START_HANDLE</span><span class="p">]</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
        <span class="p">}</span>

        <span class="k">if</span> <span class="p">(</span><span class="nx">endHandle</span><span class="p">)</span> <span class="p">{</span>
            <span class="nx">endHandle</span><span class="p">.</span><span class="nx">detach</span><span class="p">();</span>
            <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_END_HANDLE</span><span class="p">]</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
        <span class="p">}</span>
    <span class="p">},</span>

    <span class="nx">processArgs</span><span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">args</span><span class="p">)</span> <span class="p">{</span>
        <span class="kd">var</span> <span class="nx">params</span> <span class="o">=</span> <span class="p">(</span><span class="nx">args</span><span class="p">.</span><span class="nx">length</span> <span class="o">&gt;</span> <span class="mi">3</span><span class="p">)</span> <span class="o">?</span> <span class="nx">Y</span><span class="p">.</span><span class="nx">merge</span><span class="p">(</span><span class="nx">args</span><span class="p">.</span><span class="nx">splice</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="mi">1</span><span class="p">)[</span><span class="mi">0</span><span class="p">])</span> <span class="o">:</span> <span class="p">{};</span>

        <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">MIN_VELOCITY</span> <span class="k">in</span> <span class="nx">params</span><span class="p">))</span> <span class="p">{</span>
            <span class="nx">params</span><span class="p">[</span><span class="nx">MIN_VELOCITY</span><span class="p">]</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">MIN_VELOCITY</span><span class="p">;</span>
        <span class="p">}</span>

        <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">MIN_DISTANCE</span> <span class="k">in</span> <span class="nx">params</span><span class="p">))</span> <span class="p">{</span>
            <span class="nx">params</span><span class="p">[</span><span class="nx">MIN_DISTANCE</span><span class="p">]</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">MIN_DISTANCE</span><span class="p">;</span>
        <span class="p">}</span>

        <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">PREVENT_DEFAULT</span> <span class="k">in</span> <span class="nx">params</span><span class="p">))</span> <span class="p">{</span>
            <span class="nx">params</span><span class="p">[</span><span class="nx">PREVENT_DEFAULT</span><span class="p">]</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">PREVENT_DEFAULT</span><span class="p">;</span>
        <span class="p">}</span>

        <span class="k">return</span> <span class="nx">params</span><span class="p">;</span>
    <span class="p">},</span>

    <span class="nx">_onStart</span><span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">e</span><span class="p">,</span> <span class="nx">node</span><span class="p">,</span> <span class="nx">subscriber</span><span class="p">,</span> <span class="nx">ce</span><span class="p">)</span> <span class="p">{</span>

        <span class="kd">var</span> <span class="nx">start</span> <span class="o">=</span> <span class="kc">true</span><span class="p">,</span> <span class="c1">// always true for mouse</span>
            <span class="nx">endHandle</span><span class="p">,</span>
            <span class="nx">doc</span><span class="p">,</span>
            <span class="nx">preventDefault</span> <span class="o">=</span> <span class="nx">subscriber</span><span class="p">.</span><span class="nx">_extra</span><span class="p">.</span><span class="nx">preventDefault</span><span class="p">,</span>
            <span class="nx">origE</span> <span class="o">=</span> <span class="nx">e</span><span class="p">;</span> 

        <span class="k">if</span> <span class="p">(</span><span class="nx">e</span><span class="p">.</span><span class="nx">touches</span><span class="p">)</span> <span class="p">{</span>
            <span class="nx">start</span> <span class="o">=</span> <span class="p">(</span><span class="nx">e</span><span class="p">.</span><span class="nx">touches</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">1</span><span class="p">);</span>
            <span class="nx">e</span> <span class="o">=</span> <span class="nx">e</span><span class="p">.</span><span class="nx">touches</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
        <span class="p">}</span>

        <span class="k">if</span> <span class="p">(</span><span class="nx">start</span><span class="p">)</span> <span class="p">{</span>

            <span class="k">if</span> <span class="p">(</span><span class="nx">preventDefault</span><span class="p">)</span> <span class="p">{</span>
                <span class="c1">// preventDefault is a boolean or function</span>
                <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">preventDefault</span><span class="p">.</span><span class="nx">call</span> <span class="o">||</span> <span class="nx">preventDefault</span><span class="p">(</span><span class="nx">e</span><span class="p">))</span> <span class="p">{</span>
                    <span class="nx">origE</span><span class="p">.</span><span class="nx">preventDefault</span><span class="p">();</span>
                <span class="p">}</span>
            <span class="p">}</span>

            <span class="nx">e</span><span class="p">.</span><span class="nx">flick</span> <span class="o">=</span> <span class="p">{</span>
                <span class="nx">time</span> <span class="o">:</span> <span class="k">new</span> <span class="nb">Date</span><span class="p">().</span><span class="nx">getTime</span><span class="p">()</span>
            <span class="p">};</span>

            <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_START</span><span class="p">]</span> <span class="o">=</span> <span class="nx">e</span><span class="p">;</span>

            <span class="nx">endHandle</span> <span class="o">=</span> <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_END_HANDLE</span><span class="p">];</span>

            <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">endHandle</span><span class="p">)</span> <span class="p">{</span>
                <span class="nx">doc</span> <span class="o">=</span> <span class="p">(</span><span class="nx">node</span><span class="p">.</span><span class="nx">get</span><span class="p">(</span><span class="nx">NODE_TYPE</span><span class="p">)</span> <span class="o">===</span> <span class="mi">9</span><span class="p">)</span> <span class="o">?</span> <span class="nx">node</span> <span class="o">:</span> <span class="nx">node</span><span class="p">.</span><span class="nx">get</span><span class="p">(</span><span class="nx">OWNER_DOCUMENT</span><span class="p">);</span>

                <span class="nx">endHandle</span> <span class="o">=</span> <span class="nx">doc</span><span class="p">.</span><span class="nx">on</span><span class="p">(</span><span class="nx">EVENT</span><span class="p">[</span><span class="nx">END</span><span class="p">],</span> <span class="nx">Y</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_onEnd</span><span class="p">,</span> <span class="k">this</span><span class="p">),</span> <span class="kc">null</span><span class="p">,</span> <span class="nx">node</span><span class="p">,</span> <span class="nx">subscriber</span><span class="p">,</span> <span class="nx">ce</span><span class="p">);</span>
                <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_END_HANDLE</span><span class="p">]</span> <span class="o">=</span> <span class="nx">endHandle</span><span class="p">;</span>
            <span class="p">}</span>
        <span class="p">}</span>
    <span class="p">},</span>

    <span class="nx">_onEnd</span><span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">e</span><span class="p">,</span> <span class="nx">node</span><span class="p">,</span> <span class="nx">subscriber</span><span class="p">,</span> <span class="nx">ce</span><span class="p">)</span> <span class="p">{</span>

        <span class="kd">var</span> <span class="nx">endTime</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Date</span><span class="p">().</span><span class="nx">getTime</span><span class="p">(),</span>
            <span class="nx">start</span> <span class="o">=</span> <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_START</span><span class="p">],</span>
            <span class="nx">valid</span> <span class="o">=</span> <span class="o">!!</span><span class="nx">start</span><span class="p">,</span>
            <span class="nx">endEvent</span> <span class="o">=</span> <span class="nx">e</span><span class="p">,</span>
            <span class="nx">startTime</span><span class="p">,</span>
            <span class="nx">time</span><span class="p">,</span>
            <span class="nx">preventDefault</span><span class="p">,</span>
            <span class="nx">params</span><span class="p">,</span>
            <span class="nx">xyDistance</span><span class="p">,</span> 
            <span class="nx">distance</span><span class="p">,</span>
            <span class="nx">velocity</span><span class="p">,</span>
            <span class="nx">axis</span><span class="p">;</span>

        <span class="k">if</span> <span class="p">(</span><span class="nx">valid</span><span class="p">)</span> <span class="p">{</span>

            <span class="k">if</span> <span class="p">(</span><span class="nx">e</span><span class="p">.</span><span class="nx">changedTouches</span><span class="p">)</span> <span class="p">{</span>
                <span class="k">if</span> <span class="p">(</span><span class="nx">e</span><span class="p">.</span><span class="nx">changedTouches</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">1</span> <span class="o">&amp;&amp;</span> <span class="nx">e</span><span class="p">.</span><span class="nx">touches</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
                    <span class="nx">endEvent</span> <span class="o">=</span> <span class="nx">e</span><span class="p">.</span><span class="nx">changedTouches</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
                <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
                    <span class="nx">valid</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
                <span class="p">}</span>
            <span class="p">}</span>

            <span class="k">if</span> <span class="p">(</span><span class="nx">valid</span><span class="p">)</span> <span class="p">{</span>

                <span class="nx">params</span> <span class="o">=</span> <span class="nx">subscriber</span><span class="p">.</span><span class="nx">_extra</span><span class="p">;</span>
                <span class="nx">preventDefault</span> <span class="o">=</span> <span class="nx">params</span><span class="p">[</span><span class="nx">PREVENT_DEFAULT</span><span class="p">];</span>

                <span class="k">if</span> <span class="p">(</span><span class="nx">preventDefault</span><span class="p">)</span> <span class="p">{</span>
                    <span class="c1">// preventDefault is a boolean or function</span>
                    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">preventDefault</span><span class="p">.</span><span class="nx">call</span> <span class="o">||</span> <span class="nx">preventDefault</span><span class="p">(</span><span class="nx">e</span><span class="p">))</span> <span class="p">{</span>
                        <span class="nx">endEvent</span><span class="p">.</span><span class="nx">preventDefault</span><span class="p">();</span>
                    <span class="p">}</span>
                <span class="p">}</span>

                <span class="nx">startTime</span> <span class="o">=</span> <span class="nx">start</span><span class="p">.</span><span class="nx">flick</span><span class="p">.</span><span class="nx">time</span><span class="p">;</span>
                <span class="nx">endTime</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Date</span><span class="p">().</span><span class="nx">getTime</span><span class="p">();</span>
                <span class="nx">time</span> <span class="o">=</span> <span class="nx">endTime</span> <span class="o">-</span> <span class="nx">startTime</span><span class="p">;</span>


                <span class="nx">xyDistance</span> <span class="o">=</span> <span class="p">[</span>
                    <span class="nx">endEvent</span><span class="p">.</span><span class="nx">pageX</span> <span class="o">-</span> <span class="nx">start</span><span class="p">.</span><span class="nx">pageX</span><span class="p">,</span>
                    <span class="nx">endEvent</span><span class="p">.</span><span class="nx">pageY</span> <span class="o">-</span> <span class="nx">start</span><span class="p">.</span><span class="nx">pageY</span>
                <span class="p">];</span>

                <span class="k">if</span> <span class="p">(</span><span class="nx">params</span><span class="p">.</span><span class="nx">axis</span><span class="p">)</span> <span class="p">{</span>
                    <span class="nx">axis</span> <span class="o">=</span> <span class="nx">params</span><span class="p">.</span><span class="nx">axis</span><span class="p">;</span>
                <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
                    <span class="nx">axis</span> <span class="o">=</span> <span class="p">(</span><span class="nb">Math</span><span class="p">.</span><span class="nx">abs</span><span class="p">(</span><span class="nx">xyDistance</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">&gt;=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">abs</span><span class="p">(</span><span class="nx">xyDistance</span><span class="p">[</span><span class="mi">1</span><span class="p">]))</span> <span class="o">?</span> <span class="s1">&#39;x&#39;</span> <span class="o">:</span> <span class="s1">&#39;y&#39;</span><span class="p">;</span>
                <span class="p">}</span>

                <span class="nx">distance</span> <span class="o">=</span> <span class="nx">xyDistance</span><span class="p">[(</span><span class="nx">axis</span> <span class="o">===</span> <span class="s1">&#39;x&#39;</span><span class="p">)</span> <span class="o">?</span> <span class="mi">0</span> <span class="o">:</span> <span class="mi">1</span><span class="p">];</span>
                <span class="nx">velocity</span> <span class="o">=</span> <span class="p">(</span><span class="nx">time</span> <span class="o">!==</span> <span class="mi">0</span><span class="p">)</span> <span class="o">?</span> <span class="nx">distance</span><span class="o">/</span><span class="nx">time</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>

                <span class="k">if</span> <span class="p">(</span><span class="nb">isFinite</span><span class="p">(</span><span class="nx">velocity</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nb">Math</span><span class="p">.</span><span class="nx">abs</span><span class="p">(</span><span class="nx">distance</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="nx">params</span><span class="p">[</span><span class="nx">MIN_DISTANCE</span><span class="p">])</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nb">Math</span><span class="p">.</span><span class="nx">abs</span><span class="p">(</span><span class="nx">velocity</span><span class="p">)</span>  <span class="o">&gt;=</span> <span class="nx">params</span><span class="p">[</span><span class="nx">MIN_VELOCITY</span><span class="p">]))</span> <span class="p">{</span>

                    <span class="nx">e</span><span class="p">.</span><span class="nx">type</span> <span class="o">=</span> <span class="s2">&quot;flick&quot;</span><span class="p">;</span>
                    <span class="nx">e</span><span class="p">.</span><span class="nx">flick</span> <span class="o">=</span> <span class="p">{</span>
                        <span class="nx">time</span><span class="o">:</span><span class="nx">time</span><span class="p">,</span>
                        <span class="nx">distance</span><span class="o">:</span> <span class="nx">distance</span><span class="p">,</span>
                        <span class="nx">velocity</span><span class="o">:</span><span class="nx">velocity</span><span class="p">,</span>
                        <span class="nx">axis</span><span class="o">:</span> <span class="nx">axis</span><span class="p">,</span>
                        <span class="nx">start</span> <span class="o">:</span> <span class="nx">start</span>
                    <span class="p">};</span>

                    <span class="nx">ce</span><span class="p">.</span><span class="nx">fire</span><span class="p">(</span><span class="nx">e</span><span class="p">);</span>

                <span class="p">}</span>

                <span class="nx">subscriber</span><span class="p">[</span><span class="nx">_FLICK_START</span><span class="p">]</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
            <span class="p">}</span>
        <span class="p">}</span>
    <span class="p">},</span>

    <span class="nx">MIN_VELOCITY</span> <span class="o">:</span> <span class="mi">0</span><span class="p">,</span>
    <span class="nx">MIN_DISTANCE</span> <span class="o">:</span> <span class="mi">0</span><span class="p">,</span>
    <span class="nx">PREVENT_DEFAULT</span> <span class="o">:</span> <span class="kc">false</span>
<span class="p">});</span>
</pre></div>

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